public static int ED(string needle, string haystack)
{
CMatrix m = new CMatrix(needle.Length + 1, haystack.Length + 1);
for (int i = 0; i < m.Rows; i++)
{
m.Set(i, 0, i);
}
for (int i = 0; i < m.Cols; i++)
{
m.Set(0, i, i);
}
for (int row = 1; row < m.Rows; row++)
{
for (int col = 1; col < m.Cols; col++)
{
if (needle[row - 1] == haystack[col - 1])
{
m.Set(row, col, m.Get(row - 1, col - 1));
}
else
{
int min = (int) min3(m.Get(row, col - 1)
, m.Get(row - 1, col - 1)
, m.Get(row - 1, col));
m.Set(row, col, min + 1);
}
}
}
Console.WriteLine(m);
return (int) m.Get(m.Rows - 1, m.Cols - 1);
}
public static CMatrix operator +(CMatrix a, CMatrix b)
{
if ((a.Rows != b.Rows) || (a.Cols != b.Cols))
{
throw new MatrixException("Rows or cols not equal, so can't add these matrices.");
}
CMatrix ret = new CMatrix(a.Rows, a.Cols);
for (int row = 0; row < a.Rows; row++)
{
for (int col = 0; col < a.Cols; col++)
{
ret.Set(row, col, a.Get(row, col) + b.Get(row, col));
}
}
return ret;
}
public static CMatrix operator *(CMatrix a, CMatrix b)
{
if (a.Cols != b.Rows)
{
throw new MatrixException("Rows in a not equal to cols in b can't multiply these matrices.");
}
CMatrix ret = new CMatrix(a.Rows, b.Cols);
for (int row = 0; row < a.Rows; row++)
{
for (int col = 0; col < b.Cols; col++)
{
float sum = 0.0f;
for (int i = 0; i < a.Cols; i++)
{
sum += a.Get(row, i) * b.Get(i, col);
}
ret.Set(row, col, sum);
}
}
return ret;
}
public static CMatrix operator -(CMatrix a)
{
CMatrix ret = new CMatrix(a.Rows, a.Cols);
for (int row = 0; row < a.Rows; row++)
{
for (int col = 0; col < a.Cols; col++)
{
ret.Set(row, col, -a.Get(row, col));
}
}
return ret;
}
static void Main(string[] args)
{
CMatrix am = new CMatrix(10, 10);
CMatrix bm = new CMatrix(10, 10);
am.Identity();
bm.Identity();
Console.WriteLine(am);
Console.WriteLine(bm);
CMatrix cm = am + bm;
Console.WriteLine(cm);
CMatrix identity = new CMatrix(4, 4);
identity.Identity();
CMatrix test = new CMatrix(4, 4);
test.Set(0, 1, 10);
test.Set(3, 1, 8);
test.Set(2, 0, -5);
Console.WriteLine(test);
Console.WriteLine(identity);
Console.WriteLine(test * identity);
Console.WriteLine(test * test);
CMatrix m1 = new CMatrix(3, 2);
m1.Set(0, 0, 1);
m1.Set(0, 1, 3);
m1.Set(1, 0, 2);
m1.Set(1, 1, 5);
m1.Set(2, 0, 0);
m1.Set(2, 1, 8);
CMatrix m2 = new CMatrix(2, 4);
m2.Set(0, 0, 1);
m2.Set(0, 1, 2);
m2.Set(0, 2, 3);
m2.Set(0, 3, 4);
m2.Set(1, 0, 2);
m2.Set(1, 1, 1);
m2.Set(1, 2, 3);
m2.Set(1, 3, 0);
CMatrix m3 = m1 * m2;
Console.WriteLine(m3);
string a = "ABDEFGHIJK";
string b = "XDEFGHXXK";
int ed = EditDistance.ED(a, b);
Console.WriteLine(ed);
CMatrix mm1 = new CMatrix(10, 10);
CMatrix mm2 = new CMatrix(10, 5);
try
{
Console.WriteLine(mm1 * mm2);
Console.WriteLine(mm1 + mm2);
}
catch (IndexOutOfRangeException e)
{
}
catch (MatrixException e)
{
Console.WriteLine("A matrix exception occured");
Console.WriteLine(e.StackTrace);
}
catch (Exception e)
{
Console.WriteLine("Some other exception occured");
Console.WriteLine(e.StackTrace);
try
{
// Close the file
}
catch (Exception ee)
{
}
}
}
